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我剛剛從https://gstreamer.freedesktop.org/data/pkg/ios/1.8.1/下載了gstreamer ios二進制文件。以及來自https://cgit.freedesktop.org/~slomo/gst-sdk-tutorials/的gstreamer sdk（它還沒有更新7個月？ - 是否有更新的版本）？缺少Gstreamer IOS教程中的符號
當我在gst_ios_init.h中啓用以下功能時，我無法解析符號，如下所示。有沒有更新的SDK？我不需要liveadder或零散或編輯工具，但ios壓縮支持似乎是有用的。
當啓用：
#define GST_IOS_PLUGINS_EFFECTS
我得到：
Undefined symbols for architecture x86_64:
"_gst_plugin_liveadder_register", referenced from:
_gst_ios_init in gst_ios_init.o
當啓用：
#define GST_IOS_PLUGINS_CODECS
我得到：
Undefined symbols for architecture x86_64:
"_gst_plugin_fragmented_register", referenced from:
_gst_ios_init in gst_ios_init.o
當啓用：
#define GST_IOS_PLUGINS_EDITING
我得到：
Undefined symbols for architecture x86_64:
"_gst_plugin_gnonlin_register", referenced from:
_gst_ios_init in gst_ios_init.o
當啓用：
#define GST_IOS_PLUGINS_SYS
我得到：
Undefined symbols for architecture x86_64:
"_VTCompressionSessionCompleteFrames", referenced from:
_gst_vtenc_finish in GStreamer(libgstapplemedia_a_x86_64_-libgstapplemedia_la-vtenc.o)
"_VTCompressionSessionCreate", referenced from:
_plugin_init in GStreamer(libgstapplemedia_a_x86_64_-libgstapplemedia_la-plugin.o)
_gst_vtenc_set_format in GStreamer(libgstapplemedia_a_x86_64_-libgstapplemedia_la-vtenc.o)
"_VTCompressionSessionEncodeFrame", referenced from:
_gst_vtenc_handle_frame in GStreamer(libgstapplemedia_a_x86_64_-libgstapplemedia_la-vtenc.o)
"_VTCompressionSessionInvalidate", referenced from:
_gst_vtenc_destroy_session in GStreamer(libgstapplemedia_a_x86_64_-libgstapplemedia_la-vtenc.o)
"_VTCompressionSessionPrepareToEncodeFrames", referenced from:
_gst_vtenc_set_format in GStreamer(libgstapplemedia_a_x86_64_-libgstapplemedia_la-vtenc.o)
"_VTDecompressionSessionCreate", referenced from:
_gst_vtdec_negotiate in GStreamer(libgstapplemedia_a_x86_64_-libgstapplemedia_la-vtdec.o)
"_VTDecompressionSessionDecodeFrame", referenced from:
_gst_vtdec_handle_frame in GStreamer(libgstapplemedia_a_x86_64_-libgstapplemedia_la-vtdec.o)
"_VTDecompressionSessionInvalidate", referenced from:
_gst_vtdec_invalidate_session in GStreamer(libgstapplemedia_a_x86_64_-libgstapplemedia_la-vtdec.o)
"_VTDecompressionSessionWaitForAsynchronousFrames", referenced from:
_gst_vtdec_push_frames_if_needed in GStreamer(libgstapplemedia_a_x86_64_-libgstapplemedia_la-vtdec.o)
"_VTSessionCopyProperty", referenced from:
_gst_vtenc_handle_frame in GStreamer(libgstapplemedia_a_x86_64_-libgstapplemedia_la-vtenc.o)
_gst_vtenc_session_dump_property in GStreamer(libgstapplemedia_a_x86_64_-libgstapplemedia_la-vtenc.o)
"_VTSessionCopySupportedPropertyDictionary", referenced from:
_gst_vtenc_set_format in GStreamer(libgstapplemedia_a_x86_64_-libgstapplemedia_la-vtenc.o)
"_VTSessionSetProperty", referenced from:
_gst_vtenc_set_property in GStreamer(libgstapplemedia_a_x86_64_-libgstapplemedia_la-vtenc.o)
_gst_vtenc_set_format in GStreamer(libgstapplemedia_a_x86_64_-libgstapplemedia_la-vtenc.o)
_gst_vtenc_session_configure_property_double in GStreamer(libgstapplemedia_a_x86_64_-libgstapplemedia_la-vtenc.o)
_gst_vtenc_session_configure_property_int in GStreamer(libgstapplemedia_a_x86_64_-libgstapplemedia_la-vtenc.o)
"_kVTCompressionPropertyKey_AllowFrameReordering", referenced from:
_gst_vtenc_set_property in GStreamer(libgstapplemedia_a_x86_64_-libgstapplemedia_la-vtenc.o)
_gst_vtenc_set_format in GStreamer(libgstapplemedia_a_x86_64_-libgstapplemedia_la-vtenc.o)
"_kVTCompressionPropertyKey_AllowTemporalCompression", referenced from:
_gst_vtenc_set_format in GStreamer(libgstapplemedia_a_x86_64_-libgstapplemedia_la-vtenc.o)
"_kVTCompressionPropertyKey_AverageBitRate", referenced from:
_gst_vtenc_set_property in GStreamer(libgstapplemedia_a_x86_64_-libgstapplemedia_la-vtenc.o)
_gst_vtenc_set_format in GStreamer(libgstapplemedia_a_x86_64_-libgstapplemedia_la-vtenc.o)
"_kVTCompressionPropertyKey_ExpectedFrameRate", referenced from:
_gst_vtenc_set_format in GStreamer(libgstapplemedia_a_x86_64_-libgstapplemedia_la-vtenc.o)
"_kVTCompressionPropertyKey_MaxKeyFrameInterval", referenced from:
_gst_vtenc_set_property in GStreamer(libgstapplemedia_a_x86_64_-libgstapplemedia_la-vtenc.o)
_gst_vtenc_set_format in GStreamer(libgstapplemedia_a_x86_64_-libgstapplemedia_la-vtenc.o)
"_kVTCompressionPropertyKey_MaxKeyFrameIntervalDuration", referenced from:
_gst_vtenc_set_property in GStreamer(libgstapplemedia_a_x86_64_-libgstapplemedia_la-vtenc.o)
_gst_vtenc_set_format in GStreamer(libgstapplemedia_a_x86_64_-libgstapplemedia_la-vtenc.o)
"_kVTCompressionPropertyKey_NumberOfPendingFrames", referenced from:
_gst_vtenc_handle_frame in GStreamer(libgstapplemedia_a_x86_64_-libgstapplemedia_la-vtenc.o)
"_kVTCompressionPropertyKey_ProfileLevel", referenced from:
_gst_vtenc_set_format in GStreamer(libgstapplemedia_a_x86_64_-libgstapplemedia_la-vtenc.o)
"_kVTCompressionPropertyKey_Quality", referenced from:
_gst_vtenc_set_quality in GStreamer(libgstapplemedia_a_x86_64_-libgstapplemedia_la-vtenc.o)
"_kVTCompressionPropertyKey_RealTime", referenced from:
_gst_vtenc_set_property in GStreamer(libgstapplemedia_a_x86_64_-libgstapplemedia_la-vtenc.o)
_gst_vtenc_set_format in GStreamer(libgstapplemedia_a_x86_64_-libgstapplemedia_la-vtenc.o)
"_kVTEncodeFrameOptionKey_ForceKeyFrame", referenced from:
_gst_vtenc_init in GStreamer(libgstapplemedia_a_x86_64_-libgstapplemedia_la-vtenc.o)
[this]（http://stackoverflow.com/questions/36127066/gstreamer-ios-undefined-symbol-gst-plugin-liveadder-register）似乎是相似的 – nayana
你有沒有找到答案？我有個類似的問題！ –
sdk教程通常包含一個gst_ios_init.m文件。在這個文件中，所有的靜態gstreamer函數都被聲明瞭。如果您將liveadder元素的部分和碎片元素的部分註釋掉，則應該取得一些進展。這些元素在當前構建的gstreamer ios sdk中不提供。 – jhludwig